28720497

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43319}}^1$

素因数の和:43352

約数の個数: 16

約数和(自身を含む): 43666560

約数和(自身を除く): 14946063

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 43319, 129957, 563147, 736423, 1689441, 2209269, 9573499, 28720497]

約数ペア:

[(1, 28720497), (3, 9573499), (13, 2209269), (17, 1689441), (39, 736423), (51, 563147), (221, 129957), (663, 43319)]